Apple is releasing the first macOS Sierra public beta today for anyone wanting to test drive Siri on the Mac or any of the other new features included. Previously, macOS 10.12 has only been available to registered developers with access to a paid account; the public beta program is a free alternative that allows non-developers to test Apple’s latest software updates before their general release.

OS X El Capitan, the latest version of the Mac operating system, builds on the groundbreaking features and beautiful design introduced in OS X Yosemite, refining the experience and improving performance in lots of ways that you’ll enjoy everyday.